i2pd/Log.cpp

#include <boost/date_time/posix_time/posix_time.hpp>
#include "Log.h"

Log * g_Log = nullptr;

static const char * g_LogLevelStr[eNumLogLevels] =
{
    "error", // eLogError
    "warn",  // eLogWarning
    "info",  // eLogInfo
    "debug"  // eLogDebug 
};

void LogMsg::Process()
{
    auto& output = (log && log->GetLogStream ()) ? *log->GetLogStream () : std::cerr;   
    if (log)    
        output << log->GetTimestamp ();
    else
        output << boost::posix_time::second_clock::local_time().time_of_day ();
    output << "/" << g_LogLevelStr[level] << " - ";
    output << s.str();
}

const std::string& Log::GetTimestamp ()
{
#if (__GNUC__ == 4) && (__GNUC_MINOR__ <= 6)    
    auto ts = std::chrono::monotonic_clock::now (); 
#else   
    auto ts = std::chrono::steady_clock::now ();    
#endif  
    if (ts > m_LastTimestampUpdate + std::chrono::milliseconds (500)) // 0.5 second
    {
        m_LastTimestampUpdate = ts;
        m_Timestamp = boost::posix_time::to_simple_string (boost::posix_time::second_clock::local_time().time_of_day ());
    }       
    return m_Timestamp;
}

void Log::Flush ()
{
    if (m_LogStream)
        m_LogStream->flush();
}

void Log::SetLogFile (const std::string& fullFilePath)
{
    auto logFile = new std::ofstream (fullFilePath, std::ofstream::out | std::ofstream::binary | std::ofstream::trunc);
    if (logFile->is_open ())
    {
        SetLogStream (logFile);
        LogPrint("Logging to file ",  fullFilePath, " enabled.");
    }   
    else
        delete logFile;
}

void Log::SetLogStream (std::ostream * logStream)
{
    if (m_LogStream) delete m_LogStream;    
    m_LogStream = logStream;
}